Notes:- its really really small, building is a bit tricky but not too bad. The flat headless screws can be a little tedious. The posts on the outside are such that some of your coil wire partially blocks the wick holes. A small nuisance - yes, there is the, "the split atty by DNV" logo on the bottom- no, that is not the standard drip tip... SKU 5561403 for those interested- wish it would come with an extra glass tank, otherwise the accessories bag was decent (2 ceramic blocks for single coil builds, 5 o-rings, 2 flat head screws, 2 headless flat head screws, a squonk nut, a threaded delrin (?) drip tip, a threaded drip tip adapter, and a screw driver) and that little burlap SJMY baggy- the O-ring tolerance around the tank that meets the top cap was super tight. I put a little bit of juice so it slides a little nicer, but not a great quality o-ring. - filling the tank is a little tricky. Small hole at the top of the deck won't take most juice bottle top caps because it's just so small. I've order some of these to counteract SKU 1295001. I've found a juice tip that will work, but it requires fairly decent precision. I've spilled some out, and the "juice well" on top of the deck, if you want to call it that, is very shallow, and that's the only time I've had leakage out of the airholes. I can't see this tank leaking from the bottom as there's a lip that surrounds the bottom of the tank glass. I hate leakage of any kind, but this looks like it won't leak if you have a small enough juice bottle tip- finally taste is very good. I haven't had any spit back. I'm quite happy with the way it vapes, but it does has small annoyances. Surprisingly, a decent amount of airflow - can't comment on the BF pin as I'm not a squonker